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Related Concept Videos

Atomic Force Microscopy01:08

Atomic Force Microscopy

Atomic force microscopy (AFM) is a type of scanning probe microscopy that can analyze topographic details of various specimens like ceramics, glass, polymers, and biological samples. AFM offers over 1000 times more resolution than the optical imaging system. Images generated from AFM are three-dimensional surface profiles, offering an advantage over the flat, two-dimensional images from other imaging techniques.
The AFM Probe
The probe is regarded as the heart of any AFM setup and comprises the...

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Related Experiment Video

Updated: Jun 30, 2026

Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation
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Light-driven plasmonic microrobot for nanoparticle manipulation.

Jin Qin1, Xiaofei Wu2, Anke Krueger3

  • 1Nano-Optics and Biophotonics Group, Experimentelle Physik 5, Physikalisches Institut, Universität Würzburg, Am Hubland, Würzburg, Germany. jin.qin@uni-wuerzburg.de.

Nature Communications
|March 16, 2025
PubMed
Summary
This summary is machine-generated.

Researchers developed a mobile microrobot using light-activated plasmonic nanomotors and nano-tweezers. This innovation enables precise, all-optical manipulation and transport of single nanoparticles, advancing nanotechnology and life sciences.

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Area of Science:

  • Nanotechnology
  • Robotics
  • Optics

Background:

  • Light-driven microdrones utilize plasmonic nanomotors for 2D maneuverability in aqueous environments.
  • Traditional optical tweezers are limited by substrate fixation and lack mobility.

Purpose of the Study:

  • To integrate a light-operated manipulator (plasmonic nano-tweezer) into a microdrone platform.
  • To create a mobile microrobot capable of precise, all-optical transport and delivery of single nanoparticles.

Main Methods:

  • Incorporation of a plasmonic nano-tweezer with a resonant cross-antenna nanostructure into a microdrone.
  • Utilizing circularly polarized light for controlling microdrone motors and nanoparticle trapping.
  • Demonstration of complex pick-up and release sequences of nanoparticles.

Main Results:

  • The microrobot achieved stable trapping of a 70-nanometer fluorescent nanodiamond.
  • Demonstrated precise all-optical transport and release of nanoparticles.
  • Showcased versatile microrobot operations including trap-transport-release-trap-transport actions.

Conclusions:

  • The developed plasmonic microrobot offers enhanced maneuverability and precise nanoparticle manipulation.
  • This technology has potential applications in targeted drug delivery, single-cell manipulation, and quantum sensing.
  • The mobile microrobot platform facilitates interdisciplinary research at the nanoscale.